Dreamliner malfunction mystery still up in air

U.S. aviation investigators say there are still too few answers to the cause of battery malfunctions aboard the Boeing 787.

http://www.wbir.com/video/2118171274001/1/Dreamliner-malfunction-mystery-still-up-in-airhttp://bc_gvpc.edgesuite.net/img/963482463001/201301/3860/963482463001_2118154952001_961896998-149-1359116526252.jpg?pubId=963482463001Dreamliner malfunction mystery still up in airU.S. aviation investigators say there are still too few answers to the cause of battery malfunctions aboard the Boeing 787.TravelBoeingtechnologyntsbdreamliner787ReutersInternational newsvpcuntiedairline01:12